我想调整我的 ubuntu 分区 (/dev/sda2) 的大小，并尝试首先通过 lvm 缩小逻辑卷，然后通过 lvm 和 gparted 缩小物理卷。虽然缩小逻辑卷有效，但缩小物理卷无效。
这是在 Ubuntu 18.04 可启动 USB 上。
附件是我的物理卷、逻辑卷和 gparted 的输出，以及我在尝试调整大小时遇到的错误。我的理解是分区末尾的交换逻辑卷阻止了这一点。有人能解释一下这有什么用吗，我是否需要它，以及我是否可以将它移动到磁盘上的另一个位置来缩小我的分区？
--- Logical volume ---
LV Path /dev/ubuntu-vg/root
LV Name root
VG Name ubuntu-vg
LV UUID YdBCyk-CZ4x-o9MW-r50e-2pPv-AVCM-4UTwLU
LV Write Access read/write
LV Creation host, time ubuntu, 2018-06-23 23:36:52 -0400
LV Status available
# open 1
LV Size 359.30 GiB
Current LE 91981
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/ubuntu-vg/swap_1
LV Name swap_1
VG Name ubuntu-vg
LV UUID oXl52b-jhwl-5YVm-LDux-Od0N-7uXs-Y1FpyE
LV Write Access read/write
LV Creation host, time ubuntu, 2018-06-23 23:36:52 -0400
LV Status available
# open 2
LV Size 980.00 MiB
Current LE 245
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Physical volume ---
PV Name /dev/sda2
VG Name ubuntu-vg
PV Size <465.26 GiB / not usable 2.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 119106
Free PE 26880
Allocated PE 92226
PV UUID 85nOEc-rewk-yNNR-tQms-Pk4W-ax4X-5fLYmX
#
sudo lvm pvresize -v --setphysicalvolumesize 387361792K /dev/sda2
Wiping internal VG cache
Wiping cache of LVM-capable devices
Archiving volume group "ubuntu-vg" metadata (seqno 7).
/dev/sda2: Requested size <369.42 GiB is less than real size 465.26 GiB. Proceed? [y/n]: y
Accepted input: [y]
WARNING: /dev/sda2: Pretending size is 774723584 not 975722496 sectors.
Resizing volume "/dev/sda2" to 774723584 sectors.
Resizing physical volume /dev/sda2 from 119106 to 94570 extents.
/dev/sda2: cannot resize to 94570 extents as later ones are allocated.
0 physical volume(s) resized / 1 physical volume(s) not resized
感谢您的帮助。